/* File Transfer Genius */
:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --surface-2: #eef2f8;
  --text: #1b2333;
  --muted: #5c6b83;
  --line: #d8dfe9;
  --accent: #1f5fbf;
  --accent-hover: #174a96;
  --accent-soft: #e3ecfb;
  --danger: #b8322a;
  --danger-soft: #fbe6e4;
  --ok: #1d7a4a;
  --ok-soft: #e1f3e8;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 30, 50, .06), 0 4px 16px rgba(20, 30, 50, .06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161d;
    --surface: #1b212b;
    --surface-2: #232b37;
    --text: #e6eaf1;
    --muted: #97a3b6;
    --line: #2f3945;
    --accent: #6ea1f0;
    --accent-hover: #8fb6f5;
    --accent-soft: #223452;
    --danger: #f08a82;
    --danger-soft: #3d2320;
    --ok: #6fcf97;
    --ok-soft: #1f3a2c;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 16px rgba(0, 0, 0, .3);
  }
}
* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
h1 { font-size: 1.7rem; margin: 0 0 .5rem; letter-spacing: -.01em; }
h2 { font-size: 1.15rem; margin: 0 0 .8rem; }
p { margin: 0 0 .8rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; background: var(--surface-2); padding: .1em .35em; border-radius: 4px; }
.muted { color: var(--muted); }
.center { text-align: center; }
.inline { display: inline; }

/* header / footer */
.site-head {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .7rem 1.5rem; background: var(--surface); border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 700; color: var(--text); font-size: 1.05rem; }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: .72rem; letter-spacing: .04em;
}
.site-nav { display: flex; align-items: center; gap: .2rem; flex-wrap: wrap; }
.site-nav a, .site-nav .linklike { padding: .4rem .7rem; border-radius: 6px; color: var(--text); font-size: .95rem; }
.site-nav a:hover, .site-nav .linklike:hover { background: var(--surface-2); text-decoration: none; }
.site-nav a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.site-main { flex: 1; width: 100%; max-width: 960px; margin: 0 auto; padding: 1.5rem; }
body.wide .site-main { max-width: 1240px; }
.site-foot { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding: 1rem 1.5rem; font-size: .85rem; color: var(--muted); border-top: 1px solid var(--line); }

/* cards and layout */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.4rem; margin-bottom: 1.2rem; }
.card.narrow { max-width: 420px; margin: 3rem auto; }
.card.narrow-wide { max-width: 680px; }
.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.2rem; }
.page-head p { margin: 0; }
.page-actions { display: flex; align-items: center; gap: 1rem; }
.hero { display: grid; grid-template-columns: 1.3fr 1fr; gap: 2.5rem; align-items: center; padding: 2rem 0; }
.hero h1 { font-size: 2.4rem; line-height: 1.15; }
.lead { font-size: 1.1rem; color: var(--muted); }
.login-card { margin: 0; }
@media (max-width: 760px) { .hero { grid-template-columns: 1fr; } .site-main { padding: 1rem; } }

/* forms */
.stack { display: flex; flex-direction: column; gap: .9rem; }
label { display: flex; flex-direction: column; gap: .3rem; font-size: .9rem; font-weight: 600; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: .4rem; font-weight: 500; }
input[type=text], input[type=password], input[type=email], input[type=number], input[type=file], textarea {
  font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--line); border-radius: 7px; padding: .55rem .7rem; width: 100%;
}
input:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
textarea { resize: vertical; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem; }
@media (max-width: 600px) { .two-col { grid-template-columns: 1fr; } }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem; font: inherit; font-weight: 600; font-size: .95rem;
  padding: .55rem 1rem; border-radius: 7px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer; white-space: nowrap;
}
.btn:hover { background: var(--surface-2); text-decoration: none; color: var(--text); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.btn.danger { color: var(--danger); border-color: var(--danger); background: transparent; }
.btn.danger:hover { background: var(--danger-soft); }
.btn.small { padding: .3rem .7rem; font-size: .85rem; }
.linklike { background: none; border: none; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }
.linklike:hover { text-decoration: underline; }
.copy { font: inherit; font-size: .8rem; padding: .15rem .5rem; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); color: var(--muted); cursor: pointer; }
.copy:hover { color: var(--text); background: var(--surface-2); }
.flash { padding: .7rem 1rem; border-radius: 8px; margin-bottom: 1rem; border: 1px solid; }
.flash.ok { background: var(--ok-soft); border-color: var(--ok); color: var(--text); }
.flash.error { background: var(--danger-soft); border-color: var(--danger); color: var(--text); }
.tag { display: inline-block; font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; padding: .1rem .45rem; border-radius: 999px; background: var(--accent-soft); color: var(--accent); margin-left: .3rem; vertical-align: middle; }
.tag.warn { background: var(--danger-soft); color: var(--danger); }
.props { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1.2rem; margin: 0; }
.props dt { color: var(--muted); font-weight: 600; }
.props dd { margin: 0; }
.danger-zone { border-color: var(--danger); }

/* tables */
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 1.2rem; }
table.list { width: 100%; border-collapse: collapse; font-size: .93rem; }
table.list th, table.list td { text-align: left; padding: .65rem .9rem; border-bottom: 1px solid var(--line); vertical-align: top; }
table.list th { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); background: var(--surface-2); }
table.list tr:last-child td { border-bottom: none; }
table.list .num { text-align: right; white-space: nowrap; }
.link-cell { max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.inline-fields { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; margin-bottom: .4rem; }
.inline-fields input { width: auto; padding: .3rem .5rem; font-size: .88rem; }

/* share link */
.link-box label { margin-bottom: .3rem; }
.link-row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.link-row input { flex: 1; min-width: 200px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .92rem; }

/* public share page */
.share-head { margin-bottom: 1.5rem; }
.share-head h1 { font-size: 2rem; }
.share-meta { display: flex; flex-wrap: wrap; gap: .3rem 1.2rem; color: var(--muted); font-size: .95rem; }
.description { white-space: pre-line; margin-top: .8rem; max-width: 70ch; }

/* file grid */
.file-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; }
.file-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column; transition: transform .12s ease, box-shadow .12s ease; }
.file-card:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(20, 30, 50, .12); }
.thumb { display: grid; place-items: center; aspect-ratio: 4 / 3; background: var(--surface-2); overflow: hidden; }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.icon-thumb .icon { width: 56px; height: 56px; color: var(--muted); }
.icon-thumb.cat-image .icon, .icon-thumb.cat-video .icon { color: #7c4dbd; }
.icon-thumb.cat-pdf .icon, .icon-thumb.cat-document .icon { color: #c2412d; }
.icon-thumb.cat-spreadsheet .icon { color: #1d7a4a; }
.icon-thumb.cat-presentation .icon { color: #d1771a; }
.icon-thumb.cat-archive .icon { color: #8a6d1f; }
.icon-thumb.cat-audio .icon { color: #1f5fbf; }
.file-body { padding: .8rem .9rem .9rem; display: flex; flex-direction: column; gap: .4rem; flex: 1; }
.file-name { font-weight: 600; color: var(--text); overflow-wrap: anywhere; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.file-meta { display: flex; flex-wrap: wrap; gap: .2rem .7rem; font-size: .82rem; color: var(--muted); }
.file-actions { display: flex; gap: .5rem; margin-top: auto; padding-top: .4rem; align-items: center; }

/* uploads */
.dropzone { border: 2px dashed var(--line); border-radius: var(--radius); padding: 1.2rem; text-align: center; margin-bottom: 1rem; background: var(--surface-2); transition: border-color .12s, background .12s; }
.dropzone.over { border-color: var(--accent); background: var(--accent-soft); }
.dropzone p { margin: 0; }
.upload-progress { list-style: none; margin: .8rem 0 0; padding: 0; text-align: left; display: flex; flex-direction: column; gap: .4rem; }
.upload-progress li { font-size: .88rem; display: grid; grid-template-columns: 1fr auto; gap: .2rem .8rem; align-items: center; }
.upload-progress .bar { grid-column: 1 / -1; height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; }
.upload-progress .bar span { display: block; height: 100%; background: var(--accent); width: 0; transition: width .15s; }
.upload-progress li.done .bar span { background: var(--ok); }
.upload-progress li.error { color: var(--danger); }
.upload-progress li.error .bar span { background: var(--danger); }